Cambridge IGCSE · 0620 · Paper 2 · Multiple choice (Extended)
Chemistry 0620/23 May/June 2016 past paper
Cambridge IGCSE Chemistry (0620) Paper 2 (Multiple choice (Extended)), variant 3, May/June 2016: the question paper and its official mark scheme, 40 questions, with the grade thresholds. Free to open, no account needed.
- Questions
- 40
- Marks
- 40
- Grade A from
- 25
File names: 0620_s16_qp_23 · 0620_s16_ms_23
Grade thresholds for 0620/23 May/June 2016
The minimum raw marks Cambridge set for each grade on this component (out of 40). Thresholds change every session and variant, so always compare your score with the paper you actually sat.
| A | B | C | D | E | F | G |
|---|---|---|---|---|---|---|
| 25 | 22 | 20 | 16 | 13 | 11 | 9 |
Topics in this paper
Which syllabus chapters 0620/23 May/June 2016 tested, by marks. Each chapter links to every past-paper question on it.
Questions in 0620/23 May/June 2016
- Question 1
The diagram shows an experiment to demonstrate diffusion. cotton wool soaked in hydrochloric acid cotton wool soaked in ammonia solution ammonium chloride Which statement explains why the ring of ammonium chloride appears as shown? A Ammonia solution only produces a …
- Question 2
Chromatography experiments are carried out on four substances, …
- Question 3
The diagram shows the apparatus used to separate the different components of a mixture by chromatography. baseline solvent spot solvent front chromatography paper Which statement about this experiment is correct? A A locating agent is used to find the position …
- Question 4
Which statements about isotopes of the same element are correct? 1 They are atoms which have the same chemical properties because they have the same number of electrons in their outer shell. 2 They are atoms which have the same …
- Question 5
The table shows the electronic structure of four atoms. atom electronic structure …
- Question 6
Which statement describes the attractive forces between molecules (intermolecular forces)? A They are strong covalent bonds which hold molecules together. B They are strong ionic bonds which hold molecules together. C They are weak forces formed between covalently-bonded molecules. D …
- Question 7
Which substance exists as a lattice of positive ions in a ‘sea of electrons’? A liquid potassium chloride B solid graphite C solid magnesium D solid silicon(IV) oxide
- Question 8
Analysis of a compound formed between magnesium and nitrogen showed it contained 14.4 g of magnesium and 5.6 g of nitrogen. What is the empirical formula of the compound? A Mg2N3 B Mg3N2 C Mg4N6 D Mg6N4
- Question 9
An excess of zinc is added to 100 cm3 of 1.0 mol / dm3 hydrochloric acid. The equation for the reaction is: Zn + 2HCl → ZnCl …
- Question 10
The diagram shows a method used to copper-plate a pan pan copper(II) sulfate solution copper + – Which equation represents the reaction at the cathode? A Cu2+ …
- Question 11
The diagram shows some properties that substances may have. To which labelled part of the diagram does 235U belong? compound used as an energy source radioactive …
- Question 12
The diagram shows a simple cell. dilute sulfuric acid metal Q metal P wire V Which pair of metals produces the largest voltage? metal P metal Q A iron copper B magnesium copper C magnesium zinc D zinc copper
- Question 13
Hydrazine, N2H4, decomposes as shown. …
- Question 14
A liquid X reacts with solid Y to form a gas. Which two diagrams show suitable methods for investigating the rate (speed) of the reaction? …
- Question 15
Which row explains why increasing temperature increases the rate of reaction? particles collide more often particles collide with more energy …
- Question 16
Methanol is manufactured by reacting carbon monoxide and hydrogen together in the presence of an aluminium oxide catalyst. The equation for the reaction is shown. CO(g) + 2H2(g) CH3OH(g) The reaction is a reversible reaction. The forward reaction is exothermic. …
- Question 17
Which equation represents a reduction reaction? A Fe2+ …
- Question 18
Which statements are properties of an acid? 1 reacts with ammonium sulfate to form ammonia 2 turns red litmus blue …
- Question 19
Which row describes whether an amphoteric oxide reacts with acids and bases? reacts with acids reacts with bases A no no B no yes C yes no D yes yes
- Question 20
Barium sulfate is an insoluble salt. It can be made by reacting copper(II) sulfate solution with barium nitrate solution. CuSO4(aq) + Ba(NO3)2(aq) → Cu(NO3)2(aq) + BaSO4(s) What is the correct order of steps to obtain a pure, dry sample of …
- Question 21
Where in the Periodic Table is the metallic character of the elements greatest? left or right side of a period at the top or bottom of a group A left bottom B left top C right bottom D right top
- Question 22
Which statement about the elements in Group I is correct? A Hydrogen is evolved when they react with water. B Ions of Group I elements have a –1 charge. C Sodium is more reactive than potassium. D Solid sodium is …
- Question 23
Osmium is a transition element. Which row gives the expected properties of osmium? melting point density compounds formed A high high coloured B high high white C high low white D low high coloured
- Question 24
Two statements about noble gases are given. 1 Noble gases are reactive, monatomic gases. 2 Noble gases all have full outer shells of electrons. Which is correct? A Both statements are correct and statement 2 explains statement 1. B Both …
- Question 25
Some properties of substance X are listed. ● It conducts electricity when molten. ● It has a high melting point. ● It burns in oxygen and the product dissolves in water to give a solution with pH 11. What is …
- Question 26
Four metals P, Q, R and S are added to separate aqueous solutions of their ions. The results are shown. metal …
- Question 27
Copper is a transition element used to make saucepans. Which property is not correct for copper? A good conductor of heat B insoluble in water C low melting point D malleable (can be hammered into shape)
- Question 28
Aluminium is extracted by electrolysis of a mixture of aluminium oxide and cryolite. Which statement is not correct? A The electrodes are made from graphite. B The formula for aluminium oxide is Al 2O3. C The purpose of the cryolite …
- Question 29
The diagram shows an experiment to investigate how paint affects the rusting of iron. air P Q water iron painted iron What happens to the water level in tubes P and Q? tube P tube Q A falls rises B …
- Question 30
A new planet has been discovered and its atmosphere has been analysed. atmosphere planet The table shows the composition of its atmosphere. gas percentage by volume carbon dioxide 4 nitrogen 72 oxygen 24 Which gases are present in the atmosphere …
- Question 31
Catalytic converters are used to remove some gaseous pollutants from car exhaust fumes. Which gas is removed from the fumes by oxidation? A carbon dioxide B carbon monoxide C nitrogen D nitrogen oxide
- Question 32
Ammonia is produced by the Haber process. …
- Question 33
One step in the manufacture of sulfuric acid is the oxidation of sulfur dioxide to sulfur trioxide. Which conditions are used for this step? temperature / °C pressure / atmospheres catalyst …
- Question 34
Which process is used to make lime (calcium oxide) from limestone (calcium carbonate)? A chromatography B electrolysis C fractional distillation D thermal decomposition
- Question 35
The diagram shows the separation of petroleum into fractions. gasoline …
- Question 36
Which compound does not belong to the same homologous series as the other three compounds? A CH3OH B C2H5COOH C C2H5OH D C7H15OH
- Question 37
The structure of an alkene and the structure of an ester are shown. …
- Question 38
What is an advantage of producing ethanol by fermentation of sugar compared to the catalytic addition of steam to ethene? A The alcohol produced is purer. B The process is faster. C The process uses high temperature. D The process …
- Question 39
A polymer has the formula shown. n C CH3 COOH …
- Question 40
Which row shows a natural polymer with the same linkages as a synthetic polymer? natural polymer synthetic polymer A complex carbohydrate nylon B complex carbohydrate Terylene C protein nylon D protein Terylene Group The Periodic Table of Elements 1 H …
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